What was found
DURING DESCENT BELOW 10000FT FAS REPORTED A STRONG DIRTY SOCK SMELL. DESCRIPTION OF ODOR/FUMES: CONTINOUS AND DISCOMFORTABLE, DIRTY SOCKS/ ACRID/ PUNGENT/ IRRITATING/ BURNING EYE SMELL. SOURCE: CABIN AIR SUPPLY VENTS. FWD CABIN AND MID CABIN. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-REF TSM 05-50-00-810-831-A APU VERIFIED NO LEAKS , ISOLATED PACK 1 AND PACK 2 , PERFORMED DECONTAMINATION , PACK BURN OUT IAW AMM 21-00-00 & R+R RECIRCULATION FILTERS IAW AMM 21-21-41 NO SMELL DETECTED , A/C OK FOR SVC.